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| Two and Three Channel Codewheels for Use with Agilent Optical Encoder Modules Technical Data HEDS-51X0/61X0 Series HEDG-512X/612X Series HEDM-512X/61XX Series Features: * Codewheels Available in Glass, Film, and Metal * Available in Two Standard Diameters * Cost Effective * Resolutions from 96 CPR to 2048 CPR * For Use with HEDS-90XX/ 91XX Series Two and Three Channel Encoders Description Agilent Technologies offers a wide variety of codewheels for use with Agilent's HEDS-9000, HEDS-9100, HEDS-9040, and HEDS-9140 series Encoder Modules. Designed for many environments, applications, and budgets, Agilent codewheels are available in Glass, Film, and Metal. These codewheels are available in resolutions from 96 Counts Per Revolution (CPR) to 1024 CPR on an 11 mm optical radius and 500 to 2048 CPR on a 23.36 mm optical radius. Each of the three codewheel materials offers a certain advantage. Metal codewheels are the most versatile, with a temperature rating up to 100C, resolution to 512 CPR (28 mm diameter), as well as 2 and 3 channel outputs. Film codewheels offer higher resolution (up to 1024 CPR on a 28 mm diameter) with an operating temperature of 70C. Glass codewheels combine the best of film and metal, offering a temperature rating of 100C and resolutions to 1024 CPR on a 28 mm diameter. In addition, each material offers a specific reliability rating. It is important to consider the specific application operating environment, long term operating conditions, and temperature ranges when choosing a codewheel material. Also See: * HEDS-9000/HEDS-9100 Encoder Module Data Sheet * HEDS-9000/9100/9200 Extended Resolution Encoder Module Data Sheet * HEDS-9040/9140 Three Channel Encoder Module Data Sheet * HEDS-9700 Small Encoder Module Data Sheet 2 Absolute Maximum Ratings It is important to consider the environment in which the codewheels will be used when selecting a codewheel material. In brief, metal codewheels are rugged, but do not offer higher resolution capabilities. Film codewheels allow higher resolution, but cannot endure the same temperatures and high humidity as metal. Glass codewheels offer both high temperature and higher resolution, but are also more expensive. Consider the following rating table when choosing a codewheel material. Parameter Storage Temperature Operating Temperature Humidity Velocity Shaft Axial Play Shaft Eccentricity Plus Radial Play Acceleration Symbol TS TA HEDS-XXXX Metal Codewheels -40C to +100C -40C to +100C HEDM-XXXX Film Codewheels -40C to +70C -40C to +70C non condensing HEDG-XXXX Glass Codewheels -40C to +100C -40C to +100C 30,000 RPM 0.25 mm ( 0.010 in) 0.1 mm ( 0.004 in) TIR 250,000 Rad/Sec2 30,000 RPM 0.175 mm ( 0.007 in) 0.04 mm ( 0.0015 in) TIR 250,000 Rad/Sec2 12,000 RPM 0.175 mm ( 0.007 in) 0.04 mm ( 0.0015 in) TIR 100,000 Rad/Sec2 Recommended Operating Conditions Parameter Maximum Count Frequency Shaft Perpendicularity Plus Axial Play Shaft Eccentricity Plus Radial Play HEDS-XXXX Metal Codewheels 100 kHz 0.25 mm ( 0.010 in) 0.1 mm ( 0.004 in) TIR HEDM-XXXX Film Codewheels 200 kHz* 0.175 mm ( 0.007 in) 0.04 mm ( 0.0015 in) TIR HEDG-XXXX Glass Codewheels 200 kHz 0.175 mm ( 0.007 in) 0.04 mm ( 0.0015 in) TIR Note: Agilent Encoder Modules are guaranteed to 100 kHz, but can operate at higher frequencies. See Encoder Module Data Sheet for specifications and output load recommendations. *HEDM-6140 is guaranteed to 100 kHz with the HEDS-9040 #T00 module. 3 Encoding Characteristics Encoding characteristics over recommended operating range and recommended mounting Part Number HEDS-51XX HEDS-61XX HEDM-512X HEDM-61XX HEDG-512X HEDG-612X tolerances unless otherwise specified. Values are for worst error over a full rotation. Please refer to Encoder Module Data Symbol C C C C C C Min. Sheet for definitions of Encoding characteristics. Description Cycle Error Position Error Cycle Error Position Error Cycle Error Position Error Cycle Error Position Error Cycle Error Position Error Cycle Error Position Error Typ. 3 10 3 7 3 4 3 2 3 4 3 2 Max. 5.5 40 5.5 20 7.5 40 7.5 20 7.5 30 7.5 15 Units e min. of arc e min. of arc e min. of arc e min. of arc e min. of arc e min. of arc Reliability In addition to the absolute maximum specifications of codewheels, the environment characteristics of the application are also important. For example, consistent, large temperature swings over the life of the product will affect the codewheel performance characteristics depending on the material. The following reliability table shows results of lifetests under varying conditions of temperature and humidity. Glass Codewheel Tests Test Storage at 100C Rotating at 100C Temperature Cycle: -40C to +100C Temperature/Humidity: 85C/85% R.H. Duration 1000 hours 500 hours 500 cycles 500 hours Number of Parts 44 10 98 43 Number of Failures 0 0 0 0 Film Codewheel Tests Test Storage at 70C Rotating at 70C Temperature Cycle: -40C to +70C Temperature Cycle: +20C to +40C Temperature Cycle: +20C to +55C Temperature Cycle: +20C to +70C Duration 1000 hours 500 hours 500 cycles 1000 cycles 1000 cycles 500 cycles Number of Parts 118 10 66 64 46 50 Number of Failures 0 0 0 0 0 0 4 Mounting Rotary Encoders with Codewheels There are two orientations for mounting the Agilent encoder module and Agilent codewheel. Figure 1a shows mounting the module with side A as the mounting plane. Figure 1b shows mounting the module with side B as the mounting plane. When assembling the encoder and codewheel, it is important to maintain the tolerances of Side A of the module, and the image side of the codewheel. See module Data Sheets for these tolerances. MODULE SIDE B IMAGE SIDE OF CODEWHEEL MODULE SIDE A IMAGE SIDE OF CODEWHEEL MODULE SIDE A MODULE SIDE B Figure 1a. Figure 1b. *Please note that the image side of the codewheel must always be facing the module Side A. Mounting with Module Side A as the Mounting Plane Mounting a high resolution or three channel encoder with Module Side A as the mounting plane requires alignment pins in the motor base. These alignment pins provide the necessary centering of the module with respect to the center of the motor shaft. In addition to centering, the codewheel gap is also important. Please refer to the respective encoder data sheet for necessary mounting information. Mounting with Module Side B as the Mounting Plane, using Agilent Assembly Tools Agilent offers centering tools and gap setting tools only for the case when the module is mounted with Side B down. Please refer to the Ordering Information Table to choose the correct assembly tools. 5 Assembly Instructions Using Agilent Assembly Tools Instructions 1. Place codewheel on shaft. 2. Set codewheel height: (a) Place the correct gap setting tool (per Ordering Information Table) on motor base, flush up against the motor shaft as shown in Figure 2. The shim has two different size steps. Choose the one that most closely matches the width of the codewheel boss. The shim should not contact the codewheel boss. (b) Push codewheel down against gap setting shim. The codewheel is now at the proper height. (c) Tighten codewheel setscrew. 3. Insert mounting screws through module and thread into the motor base. Do not tighten screws. 4. Slide the HEDS-8905 or HEDS8906 centering tool over codewheel hub and onto module as shown in Figure 3. The pins of the alignment tool should fit snugly inside the alignment recesses of the module. 5. While holding alignment tool in place, tighten screws down to secure module. 6. Remove alignment tools. IMAGE SIDE OF CODEWHEEL CENTERING TOOL CODEWHEEL GAP SETTING SHIM MODULE SIDE A CODEWHEEL MODULE SIDE A ALIGNING RECESSES MODULE SIDE B MODULE SIDE B Figure 2. Alignment Tool is Used to Set Height of Codewheel. Figure 3. Alignment Tool is Placed over Shaft and onto Codewheel Hub. Alignment Tool Pins Mate with Aligning Recesses on Module. 6 Mechanical Drawings 5.94 (0.234) MAX. 25.40 (1.000) MAX. 1.80 (0.071) MOUNTING BOSS - NOT USED ON 6 mm & 1/4" I.D. HUBS 12.70 (0.500) MAX. 10.16 (0.400) 50.0 (1.97) DIA. # 2-56 SETSCREW USE 0.035" HEX WRENCH MOUNTING BOSS 26.67 (1.050) MAX. 18.0 (0.71) 3.58 (0.141) DIMENSIONS IN MM (INCHES) # 2-56 SETSCREW USE 0.035" HEX WRENCH 0.04 MAX. 0.054 8.99 (0.354) MAX. DIMENSIONS IN MM (INCHES) 0.20 (0.008) Figure 4. HEDS-5120 Codewheel. Figure 5. HEDS-6100 Codewheel. 5.95 (0.234) MAX. 1.80 (0.071) MOUNTING BOSS 25.7 (1.01) DIA. MAX. SETSCREW INDEX PULSE REFERENCE MARKER 12.70 (0.500) MAX. 10.16 (0.400) INDEX PULSE POSITION 130 5 TYPICAL 3.58 (0.141) ROP = 11.00 mm (0.433 in.) DIMENSIONS IN MM (INCHES) Figure 6. HEDS-5140 Codewheel Used with HEDS-9140. 7 # 2-56 SETSCREW USE 0.035" HEX WRENCH 50.6 (1.99) DIA. MAX. MOUNTING BOSS SETSCREW INDEX PULSE REFERENCE MARKER 26.67 (1.050) MAX. 18.0 (0.71) INDEX PULSE POSITION 130 TYPICAL 8.99 (0.354) MAX. ROP = 23.36 mm (0.920 in.) DIMENSIONS IN MM (INCHES) Figure 7. HEDS-6140 Codewheel Used with HEDS-9040. 4.2 MAX. 5.9 MAX. 0.18 (0.007) 8.5 MAX. 2-56 SETSCREW USE 0.035" HEX WRENCH 0.18 (0.007) 15.3 MAX. 10.2 MAX. 12.6 MAX. 36.5 18 MAX. 22.50 MAX. (0.886) 2-56 SETSCREW USE 0.035" HEX WRENCH 25.56 DIA. (1.006) MAX. ARTWORK SIDE (HEDM-5121) ARTWORK SIDE (HEDM-5120) DIMENSIONS IN mm (INCHES) 50.48 DIA. (1.980) MAX. ARTWORK SIDE (HEDM-6121) ARTWORK SIDE (HEDM-6120) DIMENSIONS IN mm (INCHES) Figure 8. HEDM-5120 Codewheel/HEDM-5121 Codewheel. Figure 9. HEDM-6120 Codewheel/HEDM-6121 Codewheel. 8 0.55 (0.022) 2-56 SETSCREW USE 0.035" HEX WRENCH 5.51 (0.217) 0.55 (0.022) 2-56 SETSCREW USE 0.035" HEX WRENCH 8.43 (0.332) 10.2 MAX. 12.6 MAX. 17.98 MAX. (0.708) 22.6 MAX. 25.4 MAX. 25.56 DIA. (1.006) MAX. ARTWORK SIDE (HEDG-5121) ARTWORK SIDE (HEDG-5120) DIMENSIONS IN mm (INCHES) 50.48 DIA. (1.987) MAX. ARTWORK SIDE (HEDG-6121) ARTWORK SIDE (HEDG-6120) DIMENSIONS IN mm (INCHES) Figure 10. HEDG-5120 Codewheel/HEDG-5121 Codewheel. Figure 11. HEDG-6120 Codewheel/HEDG-6121 Codewheel. 2-56 SETSCREW USE 0.035" HEX WRENCH 0.18 (0.007) 50.48 DIA. (1.987) MAX. SETSCREW 22.50 MAX. (0.886) 8.43 (0.332) 36.5 INDEX PULSE POSITION 130 TYPICAL ARTWORK SIDE (HEDM-6141) ARTWORK SIDE (HEDM-6140) DIMENSIONS IN mm (INCHES) Figure 12. HEDM-6140 Codewheel/HEDM-6141 Codewheel. 9 Ordering Information Encoder Modules, Codewheel and Assembly Tools Metal Codewheels HEDS-9100 Option modules 0 0 HEDS-5120 Option codewheels Resolution (Cycles/Rev) K - 96 CPR C - 100 CPR D - 192 CPR E - 200 CPR F - 256 CPR G - 360 CPR H - 400 CPR A - 500 CPR I - 512 CPR Rop = 11 mm, Assembly Tools 2 Channels Centering Gap-Setting HEDSHEDSShaft Diameter 8905 8901 01 - 2 mm 02 - 3 mm 03 - 1/8 in. 04 - 5/32 in. 05 - 3/16 in. 06 - 1/4 in. 11 - 4 mm 14 - 5 mm 12 - 6 mm 13 - 8 mm 01 02 03 04 05 06 08 09 10 11 12 13 14 HEDS-5120# A C D E F G H I K * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * HEDS-9140 Option modules 0 0 HEDS-5140 Option codewheels Resolution (Cycles/Rev) C - 100 CPR E - 200 CPR F - 256 CPR G - 360 CPR A - 500 CPR I - 512 CPR 02 - 3 mm 03 - 1/8 in. 04 - 5/32 in. 05 - 3/16 in. 06 - 1/4 in. Rop = 11 mm, Assembly Tools 3 Channels Centering Gap-Setting HEDSHEDSShaft Diameter 8905 8905 11 - 4 mm 14 - 5 mm 12 - 6 mm 13 - 8 mm 01 02 03 04 05 06 08 09 10 11 12 13 14 HEDS-5140 A C E F G I * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 10 Ordering Information (Cont'd.) HEDS-9000 Option modules 0 0 HEDS-6100 Option codewheels Resolution (Cycles/Rev) A - 500 CPR B - 1000 CPR Rop = 23 mm, Assembly Tools 2 Channels Centering Gap-Setting HEDSHEDSShaft Diameter 8906 8901 06 - 1/4 in. 08 - 3/8 in. 09 - 1/2 in. 10 - 5/8 in. 11 - 4 mm 12 - 6 mm 13 - 8 mm 01 02 03 04 05 06 08 09 10 11 12 13 14 HEDS-6100# A B * * * * * * * HEDS-9040 Option modules 0 0 HEDS-6140 Option codewheels Resolution (Cycles/Rev) B - 1000 CPR J - 1024 CPR Rop = 23.36 mm, Assembly Tools 3 Channels Centering Gap-Setting HEDSHEDSShaft Diameter 8906 8906 06 - 1/4 in. 08 - 3/8 in. 09 - 1/2 in. 10 - 5/8 in. 11 - 4 mm 12 - 6 mm 13 - 8 mm 01 02 03 04 05 06 08 09 10 11 12 13 14 HEDS-6140# B J * * * * * * * * * * * Note: 1. For the lower resolution, two channel encoders, (11 mm 512 CPR; 23.36 mm 1024 CPR) the centering tool and gap-setting shim are not necessary, but sometimes helpful in an assembly process. 11 Ordering Information (Cont'd.) Film Codewheels HEDS-9000 modules Option HEDM-512 codewheels Option Rop = 11 mm, 2 Channels Assembly Tools Centering Gap-Setting HEDSHEDS8905 8901 0 0 Resolution (Cycles/Rev) Artwork Orientation Shaft Diameter B - 1000 CPR J - 1024 CPR 0 - Artwork on hub side (use when module side B is down) 1 - Artwork opposite hub side (use when module side A is down) 02 - 3 mm 06 - 1/4 in. 11 - 4 mm 12 - 6 mm 01 02 03 04 05 06 08 09 10 11 12 13 14 HEDM-5120# HEDM-5121 B J B J * * * * * * * * HEDS-9000 modules Option 0 0 HEDM-612 codewheels Option Rop = 23.36 mm, Assembly Tools 2 Channels Centering Gap-Setting HEDSHEDS8906 8906 Shaft Diameter Resolution (Cycles/Rev) Artwork Orientation T - 2000 CPR U - 2048 CPR 0 - Artwork on hub side (use when module side B is down) 1 - Artwork opposite hub side (use when module side A is down) 06 - 1/4 in. 08 - 3/8 in. 12 - 6 mm 13 - 8 mm 01 02 03 04 05 06 08 09 10 11 12 13 14 HEDM-6120# HEDM-6121# T U T * * * * * * 12 Ordering Information (Cont'd.) HEDS-9040 modules Option HEDM-614 codewheels Option Rop = 23.36 mm, 3 Channels Assembly Tools Centering Gap-Setting HEDSHEDS8906 8906 0 0 Resolution (Cycles/Rev) Artwork Orientation* Shaft Diameter T - 2000 CPR 0 - Artwork on hub side (use when module side B is down) 1 - Artwork opposite hub side (use when module side A is down) 10 - 5/8 in. 12 - 6 mm 01 02 03 04 05 06 08 09 10 11 12 13 14 HEDM-6140# HEDM-6141# T T * * Glass Codewheels HEDS-9100 modules Option HEDG-512 codewheels Option Rop = 11 mm, 2 Channels Assembly Tools Centering Gap-Setting HEDSHEDS8905 8932 0 0 Resolution (Cycles/Rev) Artwork Orientation Shaft Diameter B - 1000 CPR J - 1024 CPR 0 - Artwork on hub side (use when module side B is down) 1 - Artwork opposite hub side (use when module side A is down) 06 - 1/4 in. 14 - 5 mm 01 02 03 04 05 06 08 09 10 11 12 13 14 HEDG-5121# B J * * * 13 Ordering Information (Cont'd.) HEDS-9000 modules Option HEDG-612 codewheels Option Rop = 23.36 mm, Assembly Tools 2 Channels Centering Gap-Setting HEDSHEDS8906 8932 0 0 Resolution (Cycles/Rev) Shaft Diameter 12 - 6 mm T - 2000 CPR U - 2048 CPR 01 02 03 04 05 06 08 09 10 11 12 13 14 HEDG-6120# U * www.semiconductor.agilent.com Data subject to change. Copyright (c) 2001 Agilent Technologies, Inc. April 26, 2001 Obsoletes 5965-5891E (11/99) 5988-2630EN |
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